149917665816 has 96 divisors (see below), whose sum is σ = 441183974400. Its totient is φ = 45815232960.

The previous prime is 149917665739. The next prime is 149917665817. The reversal of 149917665816 is 618566719941.

149917665816 is a `hidden beast` number, since 1 + 49 + 9 + 1 + 7 + 6 + 6 + 581 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149917665817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1725156 + ... + 1809971.

It is an arithmetic number, because the mean of its divisors is an integer number (4595666400).

Almost surely, 2^149917665816 is an apocalyptic number.

It is an amenable number.

149917665816 is an abundant number, since it is smaller than the sum of its proper divisors (291266308584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149917665816 is a wasteful number, since it uses less digits than its factorization.

149917665816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535189 (or 3535182 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The spelling of 149917665816 in words is "one hundred forty-nine billion, nine hundred seventeen million, six hundred sixty-five thousand, eight hundred sixteen".